What is blue glaze? Why is Ji Lan also called? Where can I buy good high-temperature glazed ceramics?

Viburnum blue glaze is also called Viburnum green. It is called Qing Ji, because in ancient times, the concepts of cyan, blue and green were not clear. According to Xu Zhiheng's "Talking about Porcelain in Drinking Liuzhai" in the late Qing Dynasty, this kind of ancient porcelain in Shang Qing is celadon celadon. Liu Zifen's Bamboo Garden Pottery: "A kind of cyan, often mixed with blue." Like red glaze, blue glaze belongs to high temperature crystallization glaze. Cobalt oxide (CoO) was used as colorant, green glaze was hung on the green body, and it was fired at high temperature in kiln 1200℃- 1300℃, and the color was stable. There is a company called Bao in National Ceramic Science and Technology City, which produces high-grade daily-use porcelain, and high-temperature colored glaze is their main product.